National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fair

33°F

1°C

Humidity 96%
Wind Speed Calm
Barometer 29.91 in (1013.1 mb)
Dewpoint 32°F (0°C)
Visibility 8.00 mi
Last update 6 Jan 5:56 pm EST
Extended Forecast for

South Dennis MA

  • Tonight

    Tonight: Rain likely, mainly after 1am. Cloudy, with a low around 35. Calm wind becoming east around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Chance Rain
    then Rain
    Likely

  • Wednesday

    Wednesday: A chance of rain between 10am and 1pm. Patchy fog after 4pm. Otherwise, cloudy, with a high near 39. Calm wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 30%.

    High: 39 °F

    Chance Rain
    and Patchy
    Fog

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 30. Northwest wind around 6 mph.

    Low: 30 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 40. Northwest wind 5 to 8 mph becoming calm in the afternoon.

    High: 40 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Partly Cloudy

  • Friday

    Friday: A chance of rain, mainly after 1pm. Mostly cloudy, with a high near 47. South wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 47 °F

    Partly Sunny
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain likely, mainly between 9pm and midnight. Cloudy, with a low around 37. Southwest wind 6 to 8 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    Low: 37 °F

    Rain Likely

  • Saturday

    Saturday: Rain likely, mainly after noon. Cloudy, with a high near 46. West wind 6 to 8 mph becoming east in the afternoon. Chance of precipitation is 70%.

    High: 46 °F

    Rain Likely

  • Saturday Night

    Saturday Night: Rain. Low around 36. Southeast wind 6 to 8 mph becoming southwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%.

    Low: 36 °F

    Rain

Detailed Forecast

Tonight
Rain likely, mainly after 1am. Cloudy, with a low around 35. Calm wind becoming east around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of rain between 10am and 1pm. Patchy fog after 4pm. Otherwise, cloudy, with a high near 39. Calm wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 30. Northwest wind around 6 mph.
Thursday
Sunny, with a high near 40. Northwest wind 5 to 8 mph becoming calm in the afternoon.
Thursday Night
Partly cloudy, with a low around 30. Calm wind.
Friday
A chance of rain, mainly after 1pm. Mostly cloudy, with a high near 47. South wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Friday Night
Rain likely, mainly between 9pm and midnight. Cloudy, with a low around 37. Southwest wind 6 to 8 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Saturday
Rain likely, mainly after noon. Cloudy, with a high near 46. West wind 6 to 8 mph becoming east in the afternoon. Chance of precipitation is 70%.
Saturday Night
Rain. Low around 36. Southeast wind 6 to 8 mph becoming southwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%.
Sunday
Rain likely, mainly before 9am. Mostly cloudy, with a high near 46. Southwest wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 28. West wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 38. West wind 8 to 11 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 29. West wind around 6 mph.
Tuesday
Mostly sunny, with a high near 41. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
12:11 pm EST Jan 6, 2026
Forecast Valid:
6pm EST Jan 6, 2026-6pm EST Jan 13, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation